diff --git a/um_crypto/qmc/src/v1/cipher.rs b/um_crypto/qmc/src/v1/cipher.rs
index 363142f..7d35e2f 100644
--- a/um_crypto/qmc/src/v1/cipher.rs
+++ b/um_crypto/qmc/src/v1/cipher.rs
@@ -5,8 +5,7 @@ pub const V1_KEY_SIZE: usize = 128;
 #[inline]
 pub fn qmc1_transform(key: &[u8; V1_KEY_SIZE], value: u8, offset: usize) -> u8 {
     let offset = match offset {
-        0..V1_OFFSET_BOUNDARY => offset,
-        V1_OFFSET_BOUNDARY => V1_OFFSET_BOUNDARY,
+        0..=V1_OFFSET_BOUNDARY => offset,
         offset => offset % V1_OFFSET_BOUNDARY,
     };